Question: When was the spouse divorced Nero in 9-6-68
Paraphrase: When was the companion separated Nero in 9-6-68?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q1413 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P582 ?x filter(contains(?x , '68-6-9')) }